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Abstract:
以高浓度氨氮城市垃圾渗滤液作为试验用水,在两级UASB(UASBI+UASB2)-A/O试验系统中,对比研究了先在UASBl反硝化(工艺1)与仅在A/O缺氧区反硝化(工艺2)2种工艺的脱氮过程.结果表明,在回流比为300%的条件下,2种工艺的氨氮硝化率均在99%左右,但工艺1比工艺2的TN去除率高21%.2种工艺的无机碳(IC)和pH值的变化规律差别较大,工艺1由于充分利用了原水碳源实现了高效反硝化,在系统中维持了充足的IC和较高的pH值,实现了75%~95%NO2-N累积率的短程硝化.确认能否有效利用有机碳源是产生脱氮效率差异的根本原因.
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中国环境科学
ISSN: 1000-6923
Year: 2008
Issue: 3
Volume: 28
Page: 225-228
Cited Count:
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count: 13
Chinese Cited Count:
30 Days PV: 0
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